Characters' Shirt Texture Deforming Strangely
I solved my own problem and it was simpler than I thought it would be. The reason for this strange deformation on the texture of the shirt wasn’t due to any of the reasons above. It was because I hadn’t noticed that if I change the angle of the camera view in Unity, I would see that there’s a serious weight paint problem in the shoulder area which I already know how to fix. This problem doesn’t show up in Blender because of the differences in how Unity and Blender process the visuals of weight painting. I thought I share this in case anyone else is having a similar problem and can’t figure it out. Make sure to change the angle of the camera to make sure what you’re seeing is actually what you think you’re seeing.